Abstract
We investigated the effects of stearic acid (saturated), oleic acid (monounsaturated), linoleic acid (n-6 polyunsaturated), and α-linolenic acid (n-3 polyunsaturated) on lipid metabolism in a hepatocyte-derived cell line, HepG2. HepG2 cells were cultured in medium supplemented with either stearic acid (0.1% w/v), oleic acid (0.1% v/v), linoleic acid (0.1% v/v), or α-linolenic acid (0.1% v/v). After 24 h, expression of lipid metabolism-associated genes was evaluated by real-time PCR. α-Linolenic acid showed a suppressive effect on the hepatic fatty acid de novo synthesis and fatty acid oxidation pathways, while linoleic acid also showed a tendency to suppress these pathways although the effect was weaker. Moreover, α-linolenic acid enhanced the expression of enzymes associated with reactive oxygen species (ROS) elimination. In contrast, oleic acid tended to promote fatty acid synthesis and oxidation. In conclusion, α-linolenic acid and linoleic acid may be expected to ameliorate hepatic steatosis by downregulating fatty acid de novo synthesis and fatty acid oxidation, and by upregulating ROS elimination enzymes. Oleic acid had no distinct effects for improving steatosis or oxidative stress.
| Original language | English |
|---|---|
| Pages (from-to) | 6-9 |
| Number of pages | 4 |
| Journal | In Vitro Cellular and Developmental Biology - Animal |
| Volume | 45 |
| Issue number | 1-2 |
| DOIs | |
| Publication status | Published - Feb 1 2009 |
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All Science Journal Classification (ASJC) codes
- Developmental Biology
- Cell Biology
Cite this
The effects of unsaturated fatty acids on lipid metabolism in HepG2 cells. / Kohjima, Motoyuki; Enjoji, Munechika; Higuchi, Nobito; Kato, Masaki; Kotoh, Kazuhiro; Nakashima, Manabu; Nakamuta, Makoto.
In: In Vitro Cellular and Developmental Biology - Animal, Vol. 45, No. 1-2, 01.02.2009, p. 6-9.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - The effects of unsaturated fatty acids on lipid metabolism in HepG2 cells
AU - Kohjima, Motoyuki
AU - Enjoji, Munechika
AU - Higuchi, Nobito
AU - Kato, Masaki
AU - Kotoh, Kazuhiro
AU - Nakashima, Manabu
AU - Nakamuta, Makoto
PY - 2009/2/1
Y1 - 2009/2/1
N2 - We investigated the effects of stearic acid (saturated), oleic acid (monounsaturated), linoleic acid (n-6 polyunsaturated), and α-linolenic acid (n-3 polyunsaturated) on lipid metabolism in a hepatocyte-derived cell line, HepG2. HepG2 cells were cultured in medium supplemented with either stearic acid (0.1% w/v), oleic acid (0.1% v/v), linoleic acid (0.1% v/v), or α-linolenic acid (0.1% v/v). After 24 h, expression of lipid metabolism-associated genes was evaluated by real-time PCR. α-Linolenic acid showed a suppressive effect on the hepatic fatty acid de novo synthesis and fatty acid oxidation pathways, while linoleic acid also showed a tendency to suppress these pathways although the effect was weaker. Moreover, α-linolenic acid enhanced the expression of enzymes associated with reactive oxygen species (ROS) elimination. In contrast, oleic acid tended to promote fatty acid synthesis and oxidation. In conclusion, α-linolenic acid and linoleic acid may be expected to ameliorate hepatic steatosis by downregulating fatty acid de novo synthesis and fatty acid oxidation, and by upregulating ROS elimination enzymes. Oleic acid had no distinct effects for improving steatosis or oxidative stress.
AB - We investigated the effects of stearic acid (saturated), oleic acid (monounsaturated), linoleic acid (n-6 polyunsaturated), and α-linolenic acid (n-3 polyunsaturated) on lipid metabolism in a hepatocyte-derived cell line, HepG2. HepG2 cells were cultured in medium supplemented with either stearic acid (0.1% w/v), oleic acid (0.1% v/v), linoleic acid (0.1% v/v), or α-linolenic acid (0.1% v/v). After 24 h, expression of lipid metabolism-associated genes was evaluated by real-time PCR. α-Linolenic acid showed a suppressive effect on the hepatic fatty acid de novo synthesis and fatty acid oxidation pathways, while linoleic acid also showed a tendency to suppress these pathways although the effect was weaker. Moreover, α-linolenic acid enhanced the expression of enzymes associated with reactive oxygen species (ROS) elimination. In contrast, oleic acid tended to promote fatty acid synthesis and oxidation. In conclusion, α-linolenic acid and linoleic acid may be expected to ameliorate hepatic steatosis by downregulating fatty acid de novo synthesis and fatty acid oxidation, and by upregulating ROS elimination enzymes. Oleic acid had no distinct effects for improving steatosis or oxidative stress.
UR - http://www.scopus.com/inward/record.url?scp=69049093006&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=69049093006&partnerID=8YFLogxK
U2 - 10.1007/s11626-008-9144-7
DO - 10.1007/s11626-008-9144-7
M3 - Article
C2 - 18830774
AN - SCOPUS:69049093006
VL - 45
SP - 6
EP - 9
JO - In Vitro Cellular and Developmental Biology - Animal
JF - In Vitro Cellular and Developmental Biology - Animal
SN - 1071-2690
IS - 1-2
ER -